The Weldability of an Al-Li-Cu Alloy

Welding Aspects of Aluminum–Lithium Alloys

“…Studies using various filler metals showed that AA 1100 and AA 5556/5556A fillers gave crack-free welds in 1441 (Madhusudhan Reddy, 1988c) and AA 8090 (Gittos, 1987;Skillingberg, 1986), but parent filler and AA 2319 filler caused severe solidification cracking. The weldability of the second-generation AlÀLi alloy AA 2090 was studied with additions of different filler metals under GTA welding (Dvornak et al, 1989;Lippold and Lin, 1996;Martukanitz et al, 1987;Skillingberg et al, 1986). The dependence of cracking susceptibility on the filler metal increased in the order AA 4047, AA 4145, AA 2319, AA 4043, and AA 5356.…”

“…The first weldability study on alloy AA 2090 (AlÀ2.1LiÀ2.7CuÀ0.11Zr), by Martukanitz et al (1987), suggested that 2090 has undesirable as-welded and post-weld-aged mechanical properties and is unsuitable for welded applications. On the other hand, Kerr and Merino (1991) reported that the tensile and fracture properties of 2090 weldments at temperatures between 297 and Source: Madhusudhan Reddy (1998a,b).…”

Formation of weld crater in GMAW of aluminum alloys

“…Many experimental studies have been conducted on the GMAW process [9][10][11][12][13][14][15][16]. Since GMAW is a very complicated process involving many coupled parameters, such as welding current, voltage, welding speed, electrode feed speed, base metal material, electrode material, electrode size, and shielding gas, and also because welding is a transient process at high temperatures, it is very hard to use experimental methods alone to understand its mechanisms.…”

Latest developments for microstructural and chemical characterization of diffusion bonding in superplastic 8090 Al–Li alloys

“…3 Currently, fusion welding of most Al-Li alloys for aerospace applications implies problems, and alternative joining methods have to be used, such as riveting or fastening. [4][5][6][7] For this reason, research in this field is targeted on the study of solid-state welding, whether by direct joining or through the use of metallic interlayers. [8][9][10][11] Furthermore, Al -Li alloys exhibit excellent superplastic properties under certain conditions.…”